#include <stdio.h>
#include <string.h>

char s1[128];
char s2[128];

int main()
{
    s1[100] = '1';
    // strncpy(s1, "hello", sizeof("hello"));
    // strncpy(s2, "hello1", sizeof("hello1"));

    printf("%d\n", strcmp(s1, s2));

    return 0;
}
